After a chilly start to our day, light winds and clear skies should leave us once again in an "inverted state." High temperatures up at Lake Tahoe probably are going to be as warm, if not warmer, than what we will get here in the valley. On Monday, a strong easterly flow up in the mountains created a rare "reverse Sierra Wave."

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© NOAAOn Monday, the strong east winds created a Sierra Wave on the west side of the Sierra Nevada.

Usually when we talk about the wave, it happens on our side of the mountains when strong west or southwesterly winds create a standing wave. But as the satellite picture above (forwarded by retired meteorologist Doug Armstrong) shows, the exact opposite happened early Monday morning, and the strong east winds created a Sierra Wave on the west side of the crest. A rare sight indeed!